Many thanks for all your replies.  I have been using the CS in a 10ml dropper 
every two hours all day Saturday, and this morning on cleaning my dogs ears 
the discharge has gone from thick green to a pale yellow/watery stuff.  He 
looks much brighter in himself and actually barked this morning.  (This is 
the first time in several months - so it was great to hear).  I have also 
been giving him 5ml orally as well.  I have read with interest all your 
mesages, and will continue with CS as NOTHING has had such an effect so 
quickly since this problem started over a year ago.  
Thanks again
Chris.